Agent skill

Beacon Memory Recall

by Asymptote-Labs in Asymptote-Labs/agent-beacon

Retrieve reviewed project memory that Beacon distilled from earlier agent sessions in any harness (Claude Code, Cursor, Codex, OpenCode, and others) before starting work.

MITAuto-check passedAgent Workflows

Install Beacon Memory Recall

skills CLI
$ npx skills add Asymptote-Labs/agent-beacon --skill beacon-memory-recall -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install Asymptote-Labs/agent-beacon beacon-memory-recall --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/Asymptote-Labs/agent-beacon.git skills-src && mkdir -p .claude/skills && cp -r skills-src/agent-skills/skills/beacon-memory-recall .claude/skills/beacon-memory-recall && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
beacon-memory-recall
GitHub stars
1.8k
Token cost
~1.2k tokens
SKILL.md length
557 words
Files
1
Skills in repo
5
Repo updated
First seen
Licence
MIT

At a glance

Retrieve reviewed project memory that Beacon distilled from earlier agent sessions in any harness (Claude Code, Cursor, Codex, OpenCode, and others) before starting work.

  • Works in 3 steps: check that Beacon is available → retrieve memory → use what you found
  • Asks have we seen this before
  • SKILL.md covers When to recall, Step 1: check that Beacon is…, Step 2: retrieve memory and Step 3: use what you found, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Beacon Memory Recall is an agent skill from Asymptote-Labs/agent-beacon. Retrieve reviewed project memory that Beacon distilled from earlier agent sessions in any harness (Claude Code, Cursor, Codex, OpenCode, and others) before starting work. Use at the start of a non-trivial task in a repository, when the user asks "have we seen this before", "what did we learn last time", or "how did we fix this in Cursor/Codex", or when a build, test, or deploy step fails in a way that may have a known fix.

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts. Compatibility notes: Requires the Beacon CLI (beacon) on PATH with endpoint capture installed. Reads only local state and makes no network calls.

It sits in Agent Workflows, covering Agent memory. The repository describes itself as: The cross-harness, self-improving memory layer for AI agents. Join our community: https://discord.com/invite/zdNChS2fBu. The licence is MIT.

When your agent uses it

  • Asks have we seen this before
  • What did we learn last time
  • How did we fix this in Cursor/Codex
  • Deploy step fails in a way that may have a known fix

Example prompts

  • “have we seen this before”
  • “what did we learn last time”
  • “how did we fix this in Cursor/Codex”
  • “/beacon-memory-recall”

Requirements

  • Compatibility (from SKILL.md): Requires the Beacon CLI (beacon) on PATH with endpoint capture installed. Reads only local state and makes no network calls.

Workflow steps

3 steps, taken from the step headings in SKILL.md.

  1. check that Beacon is available
  2. retrieve memory
  3. use what you found

What it can do on your machine

Read from SKILL.md and the folder at commit 2462839. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • docs.beacon.sh

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Requires the Beacon CLI (beacon) on PATH with endpoint capture installed. Reads only local state and makes no network calls.

    From compatibility in the SKILL.md frontmatter.

Context cost

Beacon Memory Recall loads about 1.2k tokens when it runs. Until then it costs about 112 tokens; SKILL.md has 557 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~112
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Asymptote-Labs/agent-beacon at commit 2462839, republished under its MIT licence (© Asymptote-Labs). 557 words, ~1,205 tokens.

Download SKILL.mdSave it as .claude/skills/beacon-memory-recall/SKILL.md (or your agent's skills folder).
name
beacon-memory-recall
description
Retrieve reviewed project memory that Beacon distilled from earlier agent sessions in any harness (Claude Code, Cursor, Codex, OpenCode, and others) before starting work. Use at the start of a non-trivial task in a repository, when the user asks "have we seen this before", "what did we learn last time", or "how did we fix this in Cursor/Codex", or when a build, test, or deploy step fails in a way that may have a known fix.
compatibility
Requires the Beacon CLI (beacon) on PATH with endpoint capture installed. Reads only local state and makes no network calls.
license
MIT
metadata.author
asymptote-labs
metadata.homepage
https://docs.beacon.sh/concepts/cross-harness-memory
metadata.version
0.1.0

Beacon memory recall

Beacon records what agents do across every supported harness into a local log. Through the beacon-memory-distill workflow, a person reviews selected sessions and approves the reusable lessons into project memory. This skill reads that memory back, so you start the task knowing what earlier agents, in this harness or any other, already learned about this repository.

Approved memory has been reviewed by a person. Raw traces have not. Keep the two apart in everything you say.

When to recall

  • Before planning a non-trivial change in a repository you have not worked in during this session.
  • When a command fails in a way that could have a known fix (flaky tests, packaging, environment setup, release steps).
  • When the user asks what was learned, tried, or decided before.

Skip it for trivial edits, and recall at most once per task unless the task changes direction.

Step 1: check that Beacon is available

bash
beacon version

If beacon is not found, tell the user that project memory is unavailable because the Beacon CLI is not installed, point them to https://docs.beacon.sh/get-started/overview, and continue the task without memory. Do not install it yourself.

Step 2: retrieve memory

Prefer the Beacon MCP tools when this session has them. They are named search_memory, get_memory, and get_memory_context, usually under a server called beacon.

  1. Call get_memory_context with task set to two or three distinctive keywords from the current task (a tool name, file, error string). Terms are ANDed, so a full sentence will over-constrain the search and return nothing. Drop terms if the first attempt is empty.
  2. Call get_memory with an id from that result when you need the full body and its evidence.

Without the MCP tools, use the CLI from inside the repository:

bash
# Up to five memories matching the task's key terms (every term must match)
beacon memory list --json --limit 5 -q "<two or three distinctive terms>"

# Everything approved for this project, newest first
beacon memory list --limit 25

# One memory in full, with its source traces
beacon memory show <memory-id>

Search terms are ANDed, so start with two or three distinctive words (a tool, a file, an error string) and drop terms if nothing matches. --kind narrows to workflow, correction, debugging_pattern, gotcha, or convention.

Memory is scoped to the project resolved from the current directory. Run from inside the repository, or pass --project <path>.

Show full SKILL.md (215 more words)Show less

Step 3: use what you found

  • Apply a memory only when its applicability matches the current situation. Memories are lessons from specific sessions, not project policy. If one conflicts with the user's instructions or the repository's own docs (CLAUDE.md, AGENTS.md, README), follow the user and the docs, and mention the conflict.
  • When a memory changes what you do, say so in one line and cite its ID, for example: "Using Beacon memory memory_4f2c…: package smoke needs build-pkg.sh first."
  • If nothing relevant comes back, carry on. Do not report an empty result unless the user asked.

Raw history, only when asked

When the user explicitly asks what happened in an earlier session ("what did Cursor do yesterday on the release script?"), you can search raw traces:

bash
beacon endpoint traces search "<terms>" --json --limit 10
beacon endpoint traces show <trace-id> --json --limit 200

Present that as unreviewed history, never as approved memory. Traces can contain prompts, command output, and file contents: quote only what the user needs, and never repeat anything that looks like a credential. If the history holds a lesson worth keeping, suggest the beacon-memory-distill workflow so a person can review it.

Boundaries

  • Read-only. Never approve, reject, or edit memory from this skill.
  • Never run beacon memory evaluations run here. That step sends trace data to an evaluator over the network and belongs to beacon-memory-distill, where the user consents to it.

© Asymptote-Labs, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in agent-skills/skills/beacon-memory-recall of Asymptote-Labs/agent-beacon.

Open the folder on GitHubat commit 2462839

Compare with similar skills

Beacon Memory Recall next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Beacon Memory Recall compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Beacon Memory Recall this skillAsymptote-Labs/agent-beacon1.8k—~1.2kAutomated safety check: PassMIT
Reflect on Session Learningscursor/plugins11k5 repos~1.2kAutomated safety check: PassNone
Neat-Freak Knowledge CloseoutKKKKhazix/khazix-skills21k—~1.9kAutomated safety check: PassMIT
Beads Task Memorygastownhall/beads28k—~1.2kAutomated safety check: PassMIT
MemPalace Memory SearchMemPalace/mempalace60k—~1.4kAutomated safety check: PassMIT
Compound Learning WriterEveryInc/compound-engineering-plugin25k—~2kAutomated safety check: PassMIT

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Categories

Questions about Beacon Memory Recall

What does Beacon Memory Recall do?

Retrieve reviewed project memory that Beacon distilled from earlier agent sessions in any harness (Claude Code, Cursor, Codex, OpenCode, and others) before starting work. Beacon Memory Recall is an agent skill from Asymptote-Labs/agent-beacon. Retrieve reviewed project memory that Beacon distilled from earlier agent sessions in any harness (Claude Code, Cursor, Codex, OpenCode, and others) before starting work.

When should I use Beacon Memory Recall?

Beacon Memory Recall fits situations like: asks have we seen this before; what did we learn last time; how did we fix this in Cursor/Codex; deploy step fails in a way that may have a known fix.

How do I install Beacon Memory Recall in Claude Code?

Run `npx skills add Asymptote-Labs/agent-beacon --skill beacon-memory-recall -a claude-code`. Or copy the skill folder (agent-skills/skills/beacon-memory-recall in Asymptote-Labs/agent-beacon) into .claude/skills/beacon-memory-recall in your project. Claude Code loads it when a task matches its description.

How do I install Beacon Memory Recall in Codex?

Run `npx skills add Asymptote-Labs/agent-beacon --skill beacon-memory-recall -a codex`. Or copy the skill folder (agent-skills/skills/beacon-memory-recall in Asymptote-Labs/agent-beacon) into .agents/skills/beacon-memory-recall in your project. Codex loads it when a task matches its description.

Can I use Beacon Memory Recall in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Asymptote-Labs/agent-beacon --skill beacon-memory-recall -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/beacon-memory-recall, .gemini/skills/beacon-memory-recall, .github/skills/beacon-memory-recall and .opencode/skills/beacon-memory-recall in your project.

What does Beacon Memory Recall need to run?

SKILL.md names no scripts, command-line tools or credentials: Beacon Memory Recall is instructions for the agent only. Compatibility (from SKILL.md): Requires the Beacon CLI (beacon) on PATH with endpoint capture installed. Reads only local state and makes no network calls..

Does Beacon Memory Recall access the network?

SKILL.md names 1 domain. As links in the text: docs.beacon.sh. This is read from the text; nothing was executed.

Is Beacon Memory Recall safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Beacon Memory Recall use?

Beacon Memory Recall is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Beacon Memory Recall use?

About 1.2k tokens (SKILL.md is roughly 4.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Beacon Memory Recall?

Skills that share tags, products or a category with Beacon Memory Recall: Reflect on Session Learnings (cursor/plugins, 11k stars), Neat-Freak Knowledge Closeout (KKKKhazix/khazix-skills, 21k stars), Beads Task Memory (gastownhall/beads, 28k stars) and MemPalace Memory Search (MemPalace/mempalace, 60k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Beacon Memory Recall?

Asymptote-Labs (a GitHub organization) maintains it in Asymptote-Labs/agent-beacon, which has 1,810 GitHub stars. The repository holds 5 skills in this directory. The repository was last updated on October 11, 2026.

Source: Asymptote-Labs/agent-beacon on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.